What is the air quality trend in Acton?

Over the past 8 days, Acton had an average AQI of 57 based on station measurements. The worst day was 2026-05-22 with AQI 74.

How is Acton air quality measured?

Air quality in Acton is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Acton, United Kingdom

Name: Acton Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Acton, United Kingdom.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 26 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	42	29–59	10.4 µg/m³	15.9	20h	38
2026-05-28	51	36–118	13.3 µg/m³	21.1	24h	36
2026-05-27	59	37–113	16.3 µg/m³	24.9	24h	40
2026-05-26	62	32–120	17.8 µg/m³	21.1	24h	43
2026-05-25	67	41–136	20.0 µg/m³	26.7	24h	50
2026-05-24	56	30–90	14.9 µg/m³	20.4	24h	36
2026-05-23	47	34–72	11.6 µg/m³	15.3	24h	40
2026-05-22	74	36–159	26.2 µg/m³	12.0	4h	33

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